Medium severity4.2NVD Advisory· Published Nov 6, 2026· Updated Nov 6, 2026
CVE-2026-124028
CVE-2026-124028
Description
mistral.rs before 0.9.5 contains a delimiter injection vulnerability in mistralrs-core that allows attackers to inject tool calls by placing delimiter strings in text the model quotes. Attackers controlling documents, web pages or tool outputs can embed tags like </tool_call> to make qwen-xml, gemma4 or reasoning parsers return extra calls to declared tools with attacker-chosen arguments.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
1- Range: <0.9.5
Patches
Vulnerability mechanics
References
5- github.com/EricLBuehler/mistral.rs/commit/b43d3443e946752c0f662c2df42a2974410c9532nvd
- github.com/EricLBuehler/mistral.rs/pull/2455nvd
- github.com/EricLBuehler/mistral.rs/releases/tag/v0.9.5nvd
- github.com/EricLBuehler/mistral.rs/security/advisories/GHSA-34w8-j94f-8c5wnvd
- www.vulncheck.com/advisories/mistral-rs-before-0.9.5-tool-call-injection-via-mistralrs-core-output-parsersnvd
News mentions
0No linked articles in our index yet.